10340391 has 8 divisors (see below), whose sum is σ = 14232064. Its totient is φ = 6671160.

The previous prime is 10340387. The next prime is 10340411. The reversal of 10340391 is 19304301.

10340391 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10340391 - 2² = 10340387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10340321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55501 + ... + 55686.

It is an arithmetic number, because the mean of its divisors is an integer number (1779008).

Almost surely, 2^10340391 is an apocalyptic number.

10340391 is a deficient number, since it is larger than the sum of its proper divisors (3891673).

10340391 is a wasteful number, since it uses less digits than its factorization.

10340391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111221.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 10340391 is about 3215.6478351959. The cubic root of 10340391 is about 217.8607462938.

Adding to 10340391 its reverse (19304301), we get a palindrome (29644692).

It can be divided in two parts, 10340 and 391, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 10340391 in words is "ten million, three hundred forty thousand, three hundred ninety-one".